SDLPP: get/set id in visitor

sdlpp/sdlpp_scene.cpp

@@ -113,7 +113,7 @@ Scene::getCollisions( RenderObject &r ) {
 }
 void Scene::visitCollisions( RenderObject &r, Visitor &v ) {
     for ( auto &collision : getCollisions( r ) ) {
-        v.fromId( collision.first );
+        v.setFromId( collision.first );
         collision.second->visit( v );
     }
 }